Mold-stripper



2 Sheets-Sheet 1.

(No Modvel.)

. W. H. ADAMS.

MOLD STRIPPER.

N0. 393,199. Patented Nov. 20, 1888..

WITNESSES (No Model.) 2 Sheets-Sheet 2. W. H. ADAMS.

MOLD STRIPPBP.. No. 393.199. Patented Nov. 20, 1888.

WJTNESSES, y O f l' v v l;

UNiTED STATES- PATENT Erice VILLIAM HAZEL ADAMS, OF BELLAIRE, OHIO.

MOLD-STRIPPER.

SPECIFICATION forming part of Letters Patent No. 393,199, dated November20, 1888.

Application filed August 30, 188B. Serial No. 284,168. (No model.)

To all whom it may concern,.-

Be it known that I, VILLIAM HAZEL ADAMS, a citizen of the United Statesof America, residing at Bellaire, in the county of Belmont and State ofOhio, have invented certain new and useful Improvements inMold-Strippers; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to makeand use thesame, reference beinghad to the accompanying drawings, and toletters orgures of reference marked thereon, which form a part of thisspecification.

My invention relates to improvements in mold-strippers, and it consistsin the novel construction and combination of the parts, as .will be morefully hereinafter described and claimed.

The object of my invention is to save labor, time, and avoid danger tolife in stripping cast ingots from molds by an apparatus which is simpleand effective in its construction and operation, strong and durable, andeasily handled and readily understood. I attain this object by theconstruction of device illustrated in the accompanying drawings, whereinlike letters of reference are used to indicate similar parts in theseveral views, and in which- Figure l represents a molding-plant in sideelevation, showing myimproved stripper used in connection therewith.Fig. 2 is a side elevation of the stripper. Fig. 3 is a horizontalsection thereof` on the line w x of Fig. 2. Fig. 4 is an enlarged viewof the stripper in section, showing the two positions of thestripper-arms and plunger in dotted and full lines.

A indicates a hydraulic crane, on the arm B of which a truck, C, ismounted, having a depending hook, c.

M represents the mold, having ears m, all of which are well known in theart.

The stripper consists of a cylindrical casing, D, with a verticalpassage therethrough, and lateral openings d in the upper part thereof,extending into the said central vertical passage or opening in saidcasing, the lower walls of which are downwardly inclined, as shown inFig. 4. The lower part of the casing D has ears G, formed integraltherewith,and diamet` rically-situated bars 0r rods g runningtransversely across and through said ears. The upper hooked end ofagravity-cateh, H, is placed over each of the rods g, the lower enlargedshoulder end depending to withina short dis'- tance of the lower edge ofthe casing D and adapted to fasten to the ears m of the mold M.

Within the casing D a plunger, E, is movably mounted. The lower end ofthe/said plunger is flared, as at e, and fits in a corresponding recessin the bottom of the casing D, to thereby allow it to be forced belowthe lower edge of the casing. The upper part of the said plunger isconstructed with a transverse slot, e, extending therethrough, having alower A- shaped wall, e.

fithin the slots or openings d of the casing D the enlarged circularends f2 of lever-arms F are eccentri cally mounted by means of pivotpinsf passing through the casing, as shown in Figs. 2, 3, and 4. The saidenlarged ends jl of the levers F bear upon the two inclined surfacesofthe lower wall, e, of slot e of the plunger and are allowed to havemovement through said slot e. The lever-arms F are slightly curvedoutward and inward from the inner enlarged ends, f2, to plain or shortstraight surfaces f on the one edge thereof, and from thence the innerop posing edges, as shown in Figs. 2 and 4, are straight and extendoutward away from each other, the outside edges being slightly curved.vWhen the two leverarms F are together, as shown in Figs. 1 and 4, thetwo surfaces f bear against each other, and a V-shaped space is formedabove the same by the inner outwardly-inclined straight edges of saidlever-arms. The free ends of the lever-arms are formed with aperturesf', in which the lower ends of chains or cables 102 are secured, theupper ends of said chains or cables 102 being attached to a ring, w, towhich the lower end of a chain or cable, w, depending from the hook c ofthe truck C, is also fastened. Depending from the ring w', between thechains or cables @02, is a similar chain or cable, w3, carrying a yoke,104, at its lower end, which is attached to the upper end of a suspendedwedge-block, W.

As shown in Figs. 3 and 4, the enlarged eceentrically-mounted ends f2 ofthe lever-arms F do not work against but slide past each other. Thisarrangement is made in order to provide IOO the greatest amount ofworking-surface in the most compact form. To aid in the attainment ofthis operation, the said ends f2 are constructed of less thickness thanthe remaining part of the lever-arms, a shoulder, f3, being formedadjacent to said ends on reverse sides of each of the said arms, asshown in full and dotted lines, Figs. 3 and 4.

To aid in guiding the casing D and the parts carried therebyover themold M, a chain or cable, y, is attached to one side thereof, as shownin Fig. 1.

4In operation the stripper is swung over the mold M, as shown in Fig. l.The arm B of the crane is lowered until the plunger rests on the ingot,thus slackening the chains w and 102. The arms F slightly open, drawingthe plunger E up into the casing D sufiiciently to have the hooks Hstrike the ears m of mold M and engage therewith and hold the stripperdown on the mold. When the chain fw is slackened by lowering thecranearm B and allowing the plunger to rest on the ingot, ashereinbefore set forth,the wedgeblo'ck W by its own weight or gravitydrops down in the angle of the V, formed by the inner opposing edges ofthe arms F, and the said arms are thus assisted in their desiredseparation. The lower end of the plunger will now be situated directlyover andin alignment with the opening in the upper end of the mold. Byraising the arm B of crane the arms F of the stripper are drawn togetherand the plunger E is forced down against the casting and pushes it outof the lower end of the mold. The ingot remains in the pit, to' besubsequently removed, and the mold is carried to a convenient place.rlhe arm B of the derrick is then lowered again and thehook H releasedfrom the ears m of the mold. The stripper is then ready to be used in asimilar manner with another mold.

The utility of my invention is readily appreciable to those skilled inthe art, and it is unnecessary to further enlarge upon the same herein.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

l. In a mold-stripper, the combination of the casing, the slottedplungertherein, the gravity-hooks, and the operating lever-arms,substantially as described.

2. In a mold-stripper, the combination of the casing having a slot inthe upper part,the slotted plunger, the operating lever-arms, thegravity-hooks, and the wedge-block, substantially as described.

3. In a mold-stripper, the combination of the casing having a slot inthe upper part thereof,the hooks at the end ofthe casing, the slottedplunger mounted to have movement in said casing, the operatinglever-arms suspended at their upper ends from' a verticallymovablesupport, and the wedge-block suspended between the arms, substantiallyas described. v

4. In a mold-stripper, the Vcombination of lthe casing having a slotthrough the upper part thereof and gravity-hooks adjacent to the lowerend, the plunger within the casing having a slot therethrough withalowe'r Ashaped wall, lever-arms having inner enlargedeccentrically-mounted ends adapted to work past each other and havingupper inner straight edges to form a V when united, and asuspended wedgebetween the upper part of said arms, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM HAZEL ADAMS. Witnesses:

PETER SMITH, J AMEs BOURN.

